Lightbox is small javascript library used to overlay images on top of the current page.
Matomo Analytics is a free and open-source web analytics application, that runs on a PHP/MySQL web-server.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Prototype is a JavaScript Framework that aims to ease development of web applications.
TYPO3 is a free and open-source Web content management system written in PHP.